Compression mold for footwear



Jan. 28, 1947.

J. T. TEBBUTT COMPRESSION MOLDS FOR FOOTWEAR Filed Aug 30, 1944 2 Sheets-Sheet l Filed Aug. 30, 1944 2 ,Sheets-Sheet 2 /N VEN 70.6 ma MW` Amener Patented Jan. 28, 1947 UNITED STATES vPATrztxT orrlcr.v

COMPRESSION MOLD FOR FOGTWEAR John Thomas Tebbutt, Three Rivers, Quebec,

Canada Application August 30, 1944, Serial No. 551,938

1 Claim. (Cl. 12--21) .The invention relates to certain new and useful improvements in compression molds for footwear, as described in the present specification and illustrated in the accompanying drawings that form a part of the same.

The invention consists essentially of the novel features of construction as pointed out specifically in the claim for novelty following a description containing an explanation in detail of an acceptable form of the invention.

The objects of the invention are to produce better fitting inner soles for footwear and furnish more comfort to the wearer; to devise a shoe making accessory which will compress and conform the inner sole so that it will better hug the last; to save material in the manufacture of footwear and speed up the production of footwear through eliminating unnecessary operations; to enable the shoe laster to do more work and better work; to save time and money in manufacture and costs; and generally to impart a better fit to the shoe, and stiffening and accentuating a reinforcement strip and a ridge on the inner sole.

In the drawings:

Figure 1 is a perspective View of the female section of the pressure mold.

Figure 2 is a longitudinal sectional view as taken on the lines 2--2 in Figure 1.

Figure 3 is a cross sectional view as taken on the lines 3-3 in Figure 1.

Figure 4 is a perspective View of a. male portion of the pressure mold.

Figure 5 is a perspective view of the formed inner sole as applied on a last.

Figure 6 is a plan view of a formed innersole.

Figure 7 is a longitudinal sectional view as taken on the lines 'I-'I in Figure 6.

Figure 8 is a, plan view of an innersole before it has been formed in the last.

Figure 9 is a longitudinal sectional view as on the lines 9 9 in Figure 8.

Like numerals of reference indicate corresponding parts in the various figures.

Referring to the drawings, the base of the main mold or press, as indicated by the numeral Ill, is provided with a recess II formed to follow the shape of a sole of a shoe, with inwardly tapering walls I2 extending around the contour of the recess. A platform or bed portion I3 is located in the recess and is bordered by a groove I4 which vanishes into the heel portion I5 of the recess i3 and is accentuated slightly ai; the instep p0rtion I6 where the bed portion takes a slight rise.

The recess II is accurately constructed so as to conform with the toe, ball portion on the sole,

higher instep, and the heel portion of a foot or shoe.

A raised wall II extends upwardly from the base I, where the recess II is narrowed to form the instep portion I6, and is provided with an arcuate outer wall I8 and a tapering inner face IEB. This is for the purpose to insure compression and positioning of a widened portion on the inner sole when an4 extension welt inner sole is being compressed. In the event of regular welt inner soles being formed or compressed this higher wall will in no way interfere with such operation.

The secondary mold forming the ram or male part 20 has its underside 2| conforming to the recess II of the base I0 and is similar in shape to the sole portion of the last 22 to be used, except that it is tapered along its outer edges 23 to insure proper formation of the edges of the inner sole when compressed.

The inner sole 24 is cut and fabricated along the required configuration and is made of suitable material such as leather. A ridge or channel 25 is formed on the inner sole and suitably reinforced with duck, canvas or other suitable plastic and may be cemented to the uplifted leather. The inner sole is also provided with a side extension section 26.

The entire mold structure is built so that the inside of the inner sole 25 will conform exactly to the bottom surface of the last 23, thus making a better fitting shoe and requiring much fewer tacks to hold the inner sole in position on the last, saving time and material both in applying the inner sole to the last and removing the inner sole from the last.

These molds may be so constructed as to be used as twin, right and left compressing or single right and left compressing. The compression molds are combination to be used for extension welt inner soles, or for regular welt inner soles.

In the operation of this invention the inner sole is cut and fabricatedas indicated. It is then placed in the compression mold and formed by application of pressure, after which operation it is removed and tacked to the last when it will be found that, owing to the shaping of the inner sole in conformity with the contacting surface of the last, much fewer tacks are required to hold it securely to, and in close all over contact with,

same.

What I claim is:

In compression molds for footwear, a female mold having a central recess shaped to'follow the contour of a foot, a bed portion located in the said recess and bordered by a groove vanishing into the heel portion of same, the latter being arranged to accommodate a rib on the sole of a shoe, a shank supporting portion raised upperly from the bed portion of said recess, a raised Wall extending upwardly and outwardly from the eX- terior edge of the said recess on one side thereof, and having an arcuate shape along the top of same, said raised wall positioning the sole of a shoe With respect to the said recess, a male mold engaging with the said recess of said female mold l0 and abutting the lower portion of said raised wall, the said male mold having its underside shaped to conform with the said recess in said female mold, said male mold being provided with a taper along its outer edges to facilitate engaging with the recess of said female mold, and said male mold in co-operation with said female mold shaping through compression on inner sole.

JOHN THOMAS TEBBUTT. 

